X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/5032daf4a16aebc784968e8d052dbe4233f88bfe..c65df27983057ec76ed0e72bb370f9a5ae7dad28:/cc.h

diff --git a/cc.h b/cc.h
index 7c2c092..24fc205 100644
--- a/cc.h
+++ b/cc.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: cc.h,v 1.1 2004/04/17 09:58:37 mdw Exp $
+ * $Id$
  *
  * Catcrypt common stuff
  *
@@ -37,6 +37,7 @@
 /*----- Header files ------------------------------------------------------*/
 
 #include <stdio.h>
+#include <string.h>
 
 #include <mLib/dstr.h>
 
@@ -67,6 +68,14 @@ typedef struct kemops {
   void (*destroy)(kem */*k*/);
 } kemops;
 
+struct kemtab {
+  const char *name;
+  const kemops *encops;
+  const kemops *decops;
+};
+
+extern const struct kemtab kemtab[];
+
 /* --- Signing --- */
 
 typedef struct sig {
@@ -85,6 +94,15 @@ typedef struct sigops {
   void (*destroy)(sig */*s*/);
 } sigops;
 
+struct sigtab {
+  const char *name;
+  const sigops *signops;
+  const sigops *verifyops;
+  const gchash *ch;
+};
+    
+extern const struct sigtab sigtab[];
+
 /* --- Data encoding --- */
 
 typedef struct enc {
@@ -104,6 +122,8 @@ typedef struct encops {
   void (*destroy)(enc */*e*/);
 } encops;
 
+extern const encops enctab[];
+
 /*----- Functions provided ------------------------------------------------*/
 
 /* --- @getkem@ --- *
@@ -207,6 +227,112 @@ extern enc *initenc(const encops */*eo*/, FILE */*fp*/,
 
 extern void freeenc(enc */*e*/);
 
+/* --- @LIST(STRING, FP, END-TEST, NAME-EXPR)@ --- *
+ *
+ * Produce list of things.  Requires @i@ and @w@ variables in scope.
+ * END-TEST and NAME-EXPR are in terms of @i@.
+ */
+
+#define LIST(what, fp, end, name) do {					\
+  fputs(what ":\n  ", fp);						\
+  w = 2;								\
+  for (i = 0; end; i++) {						\
+    if (w == 2)								\
+      w += strlen(name);						\
+    else {								\
+      if (strlen(name) + w > 76) {					\
+	fputs("\n  ", fp);						\
+	w = 2 + strlen(name);						\
+      } else {								\
+	fputc(' ', fp);							\
+	w += strlen(name) + 1;						\
+      }									\
+    }									\
+    fputs(name, fp);							\
+  }									\
+  fputc('\n', fp);							\
+} while (0)
+
+#define STDLISTS(LI)							\
+  LI("Hash functions", hash,						\
+     ghashtab[i], ghashtab[i]->name)					\
+  LI("Encryption schemes", enc,						\
+     gciphertab[i], gciphertab[i]->name)				\
+  LI("Message authentication schemes", mac,				\
+     gmactab[i], gmactab[i]->name)					\
+  LI("Elliptic curves", ec,						\
+     ectab[i].name, ectab[i].name)					\
+  LI("Diffie-Hellman groups", dh,					\
+     ptab[i].name, ptab[i].name)
+
+#define LIDECL(text, tag, test, name)					\
+  static void show_##tag(void);
+
+#define LIDEF(text, tag, test, name)					\
+  static void show_##tag(void)						\
+  {									\
+    unsigned i, w;							\
+    LIST(text, stdout, test, name);					\
+  }
+
+#define LIENT(text, tag, test, name)					\
+  { #tag, show_##tag },
+
+struct listent {
+  const char *name;
+  void (*list)(void);
+};
+
+#define MAKELISTTAB(listtab, LISTS)					\
+  LISTS(LIDECL)								\
+  static const struct listent listtab[] = {				\
+    LISTS(LIENT)							\
+    { 0, 0 }								\
+  };									\
+  LISTS(LIDEF)
+
+extern int displaylists(const struct listent */*listtab*/,
+			char *const /*argv*/[]);
+
+/*----- Subcommand dispatch -----------------------------------------------*/
+
+typedef struct cmd {
+  const char *name;
+  int (*cmd)(int /*argc*/, char */*argv*/[]);
+  const char *usage;
+  const char *help;
+} cmd;
+
+extern void version(FILE */*fp*/);
+extern void help_global(FILE */*fp*/);
+
+/* --- @findcmd@ --- *
+ *
+ * Arguments:	@const cmd *cmds@ = pointer to command table
+ *		@const char *name@ = a command name
+ *
+ * Returns:	Pointer to the command structure.
+ *
+ * Use:		Looks up a command by name.  If the command isn't found, an
+ *		error is reported and the program is terminated.
+ */
+
+const cmd *findcmd(const cmd */*cmds*/, const char */*name*/);
+
+/* --- @sc_help@ --- *
+ *
+ * Arguments:	@const cmd *cmds@ = pointer to command table
+ *		@FILE *fp@ = output file handle
+ *		@char *const *argv@ = remaining arguments
+ *
+ * Returns:	---
+ *
+ * Use:		Prints a help message, maybe with help about subcommands.
+ */
+
+extern void sc_help(const cmd */*cmds*/, FILE */*fp*/,
+		    char *const */*argv*/);
+
 /*----- That's all, folks -------------------------------------------------*/
 
 #ifdef __cplusplus